急!! present perfect tense

你有冇去過蕭sir個yahoo blog呢? 佢個blog教人好多實用既英文架

以下呢條link就係佢拍左條youtube片, 教人past tense, present perfect tense同past perfect tense既分別(我諗大家鍾意睇片多過睇一段文字^^)

http://hk.myblog.yahoo.com/siu82english/article?mid=52

希望幫到你

2008-06-07 02:58:40 補充：
Re: serena1115

just, already並不代表present perfect tense(尤其just作adverb時有多種用法), 更何況你冇清楚解釋到present perfect係點用, 你好似教佢做MC cloze個類型題目多過教佢寫一句present perfect tense既句子

2008-06-07 02:59:08 補充：
Counter examples:

It's 10 o'clock already. 而家已經十點 (而家係咩時間點可以用present perfect tense?)

I'm just finishing my book. (just係解at this moment, now, immediately)
我本牛津字典講, 英式英文用just+ present perfect tense時, 美式英文用just+ simple past tense黎表達同一個意思 e.g. I just saw him a moment ago. (US)

when u see words like: just
already
etc
e.g: I have just taken a bath.


u need 2 use present perfect when u see present perfect words at the back/ in front of the sentense / para

e.g: Have u seen JOhn. I have not seen him.



Dunno if this is correct